Some growers are wrong LOL. It’s a fact that seedlings do not need to be sprayed. I’ve never sprayed a seedling (or used a dome) in over 30 years of indoor growing and have successful harvest after successful harvest.
When you don’t know which side to choose, look at the growers results, mine are here for all to look at, my last 4 or 5 grows are all documented here in this forum in detail along with my methods and the results.
When you start your soil grow, try following my methods for watering and you’ll be off and running in no time, always works for me and works for the many new growers that follow my methods and now have their own successful harvest after successful harvest.
My soil grow journal/tutorial